I found an item in this mornings paper which is pertinent to this. I can't find the exact item online for some reason, but it says:

"There's a natural cause that might account for much of the Arctic warming, which has melted sea ice, ice sheets and glaciers ... a natural and cyclical increase in the amount of energy in the atmosphere that moves from south to north around the Arctic Circle."

While trying to find this online I came across this: http://www.foxnews.com/story/0,2933,318686,00.html

What I found particularly interesting was #10: "In a report to Congress, the U.S. Environmental Protection Agency revealed greenhouse gas regulation to be quite the fool’s errand. In estimating the atmospheric levels of greenhouse gases 90 years from now under both a scenario where no action is taken to reduce manmade emissions and a scenario where maximum regulation is implemented, the estimated difference in average global temperature between the two scenarios is 0.17 degrees Centigrade.
For reference purposes, the estimated total increase in average global temperature for the 20th century was about 0.50 degrees Celsius."

The general theme seems to be that nobody really knows what the hell is going to happen. You'd do just as well with Nostradamus or Revelations as your climate forecaster as you would with Al Gore and his cronies.